Device exhibiting photo-induced dichroism for adaptive anti-glare vision protection

  • US 6,690,495 B1
  • Filed: 10/03/2000
  • Issued: 02/10/2004
  • Est. Priority Date: 10/03/2000
  • Status: Expired due to Term
First Claim
Patent Images

1. A device for controlling light transmissions comprising:

  • a mixture comprising a fluid material and a photochromic dyestuff material which exhibits dichroism; and

    a medium for carrying said mixture, wherein said mixture varies between a first condition and a second condition, said first condition letting substantially all visible light pass through said mixture, and said second condition absorbing and polarizing light passing through said mixture;

    wherein increasing exposure to any wavelength of ultraviolet light found in sunlight light forces said mixture toward said second condition; and

    wherein decreasing exposure to any wavelength of ultraviolet light found in sunlit allows said mixture to relax toward said first condition.

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